Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo for db failed: Name or service not known in /var/www/html/_resources/kon.php on line 10

Erro de conexão com o MySQL::

php_network_getaddresses: getaddrinfo for db failed: Name or service not known
Warning: PHP Request Shutdown: Write failed: No space left on device (28) in Unknown on line 0

Warning: PHP Request Shutdown: Failed to write session data (files). Please verify that the current setting of session.save_path is correct () in Unknown on line 0